Head to head
HD Hyundai Construction Equipment R35Z-9A vs Komatsu D51PX
The Komatsu D51PX is the bigger machine by 5,836kg.
Last reviewed 13 September 2026
Key differences
- Operating weight: the Komatsu D51PX is the bigger machine by 5,836kg.
Specifications side by side
| HD Hyundai Construction Equipment R35Z-9A | Komatsu D51PX | |
|---|---|---|
| Operating weight | 8,344 lb | 14,180kg |
| Dig depth | 10 ft 3.4 in | - |
| Engine power | 23.7 hp at 2,200 rpm (Yanmar 3TNV88F) | - |
| Class | - | 14 tonne |
Sources: HD Hyundai Construction Equipment R35Z-9A, Komatsu D51PX. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the R35Z-9A if...
The Hyundai R35Z-9A is a 3.5 tonne class zero tail swing compact excavator that gives UK contractors and hirers a lower-cost alternative to the equivalent Kubota, Takeuchi and JCB machines in the same size band. It uses a Yanmar diesel engine rather than an in-house Hyundai power unit at this size, reflecting how compact excavators across brands often share third-party engines and hydraulics. Hyundai's UK dealer coverage for this class is thinner than the market leaders, spread across several regional appointed dealers.
Full R35Z-9A specifications →Buy or hire the D51PX if...
- you want one that is the bigger machine by 5,836kg
A mid-size dozer built with wider, low ground pressure tracks for soft or wet ground. Groundworks and landfill contractors choose the PX variant over a standard-track D51 where the ground itself would otherwise bog a machine down.
Listed by
- B & T Plant Hire - Gravesend
- B & T Plant Hire Ltd - Morden
Common questions
What is the difference between the HD Hyundai Construction Equipment R35Z-9A and the Komatsu D51PX?
The Komatsu D51PX is the bigger machine by 5,836kg. The HD Hyundai Construction Equipment R35Z-9A is a a 3.5 tonne class zero tail swing compact excavator; the Komatsu D51PX is a low ground pressure crawler dozer, 14 tonne class.
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